we need to protect their environment. we have a strict quarantine system to protect the integrity of the environment. forty years on, it's still a class-a nature reserve. it's our job to look after them. ...it's my job to look after it. ♪ >> developments kicking off our top social media news of the day. the bbc tweeting just moments ago, north korea says it plans to carry out nuclear tests and more long range rocket launches, quote, aimed at the u.s. that doesn't sound like good news, does it? also today the associated press tweeting about secretary of state hillary clinton. congressmen joked with hillary clinton about a 2016 presidential bid. yes, secretary clinton's possible run was the elephant in the room during today's benghazi hearings, and the comment getting a laugh from secretary clinton. >> thank you, mr. chairman. madam secretary, let me first thank you for your service and i wish you the best in your future endeavors, mostly. (laughter) >> and taking aim at lance armstrong, tweeting that lance armstrong-insp